HHVM compatibility: array sometimes can be Traversable

All checks on instance of Traversable prepended with is_object check.

See facebook/hiphop-php#1034 for details.
Add "cols" parameter to the textarea macro

Macro textarea depends on cols variable, but there is no way to pass it.
merged branch unkind/master (PR #1193)

This PR was merged into the master branch.

Discussion
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Add "cols" parameter to the textarea macro

Macro textarea depends on cols variable, but there is no way to pass it.

Commits
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c735d6d Add "cols" parameter to the textarea macro
merged branch javer/hhvm-array-traversable (PR #1192)

This PR was merged into the master branch.

Discussion
----------

HHVM compatibility: array sometimes can be Traversable

All checks on instance of Traversable prepended with is_object check.

See facebook/hiphop-php#1034 for details.

Commits
-------

b1b1e3c HHVM compatibility: array sometimes can be Traversable